Improvement in roofing compositions



106. cowosmons, 81 COATING 0a PLASTIC snas'murso FOR MlSSlNQ sort:

JAMES P. GODFREY, OF. MANCHESTER, NEW HAMPSHIRE.

Letters Patent No. 109,002, dated November 8,1870.

IMPROVEMENT IN ROOFING COMPOSITIONS.

The Schedule referred to in these Letters Patent and maln'ng part of the same.

1, JAMES P. GODFREY, of Manchester, county of Hillsborough and State of New Hampshire, have inrented a certain Composition called Granite-State Roofing, to be used on-roofs of buildings, flat or of any slope or inclination, to shed rain and prevent the root from leaking,

The nature of the invention consists in niixingcommou coal-tar, marl-sand, lime, coal-ashes sawdust, sulphate ot'ginc, s licatgot'fmla'aiil cominoiTs aTfin certain proportions, to form a composition for roofing.

To prepare the composition, take of these substances the following proportions, viz:

One barrel common coal-tar; live bushels dried marlsand with one bushel ol dry slaked lime both SIZED-ll uc with hair-sieve; one-half bushel finely-sifted coalashes one-halt bushel finely-sifted dry sawdust two mhalt' pounds sulphate of zinc dissolve one pound silicate of soda in one quart water. and of this take two mums of salt.

Mix and work thorouglll y the same with hoe or spade, and the composition is ready for use.

,Prepare the roof by putting on two or more layers of hemp and wool-felt, or any thick paper properly saturated with tar preparation, and substantially fastcued to the said roof.

Upon this then spread the composition, with a stifi hair brush, to th thickness of one-eighth to one-quarter of an inch.

.When the composition is thus spread, sprinkle tine sand upon the same to the depth of one-eighth of an inch, or as much as will be absorbed by the composition so spread. The root is then completed.

I claim as my invention- The. manufacture or preparation of a eonniosition, which I denomiuate Granite-State rooting, ot the ingredients, in the proportion, and for the ull-poses. set forth-in this specification.

' JAMES P. GODFREY.

Witnesses:

S. D. Loun, JUsTIx SenAu.

Examiner 

